A pro-EU group has launched a fundraising bid to overturn Brexit.
Action Europe, which was founded by Gina Miller, has produced a crowdfunding page to raise £15,000 to pay for legal fees in a bid to provide ex-pats with a say over leaving the EU.
They have so far succeeded in raising £5,000 for French lawyer Julian Fouchet, who is arguing the referendum's outcome is illegitimate due to the failure to allow Britons residing abroad to vote.
Their website says it is illegal for EU citizens to be excluded from all elections, claiming that last June's result may be illegal.
They added that they want to restore ex-pats' voting rights and challenge the legitimacy of the EU Referendum.
Since last year's result, thousands of Britons living abroad have complained that they were dismissed from a vote which could affect their right to live abroad.
'A second referendum is necessary'
Mr. Fouchet says a second referendum is necessary to settle the legal complexities of Brexit by making ex-pats' voting rights matter.
He added that this is a breach of their human rights as EU law states all citizens should be allowed to vote in elections, regardless of whether they are living abroad or not.
The French lawyer has submitted a plea to the European Commission to hear his case for another vote.
His legal firm, Cornille-Pouyanne, said all European citizens should have the same democratic right to vote.
Mr. Fouchet said he intends to fight for the British.
'Britain could remain in the EU'
He added he wants to scrap the negotiation process until the rights of 1.27 million ex-pats who have resided abroad for the last 15 years are recognised, which he argues could tip a second referendum result in favour of remaining in the EU.
World War Two veteran Harry Shindler, 95, has lived in Italy since 1982.
He says he is worried he may be forced to leave his home if the EU cannot guarantee the rights of Britons to remain in European countries.
The EU has issued its Brexit negotiating directives today, but Mr. Fouchet's legal case will request that the process be scrapped entirely.
'Brexit could be destroyed'
If successful, this will result in a second referendum which will either legitimise last year's result, or destroy Brexit altogether.
The upcoming negotiations have recently been stifled by differences between Britain and the EU over the size of the former's divorce bill.
Prime Minister Theresa May said the only exit bill the EU should worry about is its own, particularly in relation to the money the superbloc owes Britain.
Brexit Secretary David Davis has threatened to walk out of EU talks if discussions about the divorce bill supersede all other aspects of leaving the superbloc.
But the Institute for Fiscal Studies said the divorce bill could be as small as £5 billion, instead of the huge sums the EU has recently demanded.
Mrs Miller, who supports the French lawyer's efforts, is also leading a campaign to sponsor anti-Brexit MPs from all political parties.
She wants a fair final deal that will be voted for by Parliament, arguing leaving the EU should be dealt with properly.
The businesswoman is also urging more young people to vote so that they have had a voice over Britain's fate in the EU.
Mr. Fouchet commenced his bid to thwart Brexit earlier this month.
British law currently states that if Britons have lived abroad for 15 years, they cannot vote in elections.
It is this legal rule that Mr. Fouchet argues is deeply unfair.
He says the political and economic consequences of leaving the EU are far too significant for ex-pats to not be allowed to have a say over how Brexit could affect their circumstances abroad.
The French lawyer said both the British Government and the EU have failed to clarify how Brexit could impact upon ex-pats' ability to travel from one EU country to another.
He will be issuing letters to Britons living in France to state what the position of French law is on this issue.
Mr. Fouchet reiterated he has no problem with Brexit, but he feels all Brits deserve the right to have their say over leaving the EU.